 In 1848/49 he lectured at Joanneum on anthropology as a science and represented the School of Agriculture in 1848 and 1850.In 1850 he was appointed professor at the University of Graz, where he founded the Zoological Museum (in the present day Joanneum Natural History Museum), and in 1852 at Prague.From 1853–1857 he traveled around the world and in 1862 he was appointed professor at the University of Vienna.